Improvement in telegraph-insulators



G. L. LE BARON.

Telegraph-Insulators. N0.l49,762 PatentedAprill4,1874.

Witnesses:

UNITED STATES PATENT ()FFICE.

enAELEs L. LE EAnoN, or PENSACOLA, ELoIuDA.

IMPROVEMENT IN TELEGRAPH-INSULATORS.

Specification forming part of Letters Patent bio-149,762, dated April 14, 1874; application filed January 16, 1874.

CAsE 13.

To all whom it may concern:

Be it known that I,G11AnLEs L. LE BARON, of Pensacola, in the county of Escambia and State of Florida, have invented a new and Improved Bracket-Insulator for TelegraphlVires; and I do hereby declare that the following is a full, clear, and exact description of the same, reference bcin g had to the accompanying drawing forming a part of this specification.

My invention relates to an improvement in the class of bracket-insulators having a cylindrical or round form; and consists in constructing the insulator with concave ends and a circumferential groove, as hereinafter de scribed.

In the drawing, Figure 1 is a front view of my improved insulator as applied in practice. Fig. 2 is a longitudinal section.

The insulator A is cylindrical inform, made preferably of glass, and provided with a central longitudinal hole to adapt it to be slipped on, and supported by, a spike, B, which is driven into the post 0. The spike is slot-ted near the end to receive the key a, by which the insulator is held thereon. The insulator has a concavity, I), at each end, for the purpose of causing the water accumulated on. its sides during rains, fogs, &c., to drop oft in place of flowing to the post, as it would otherwise tend to do. It also increases the distance, electrically, between the spike and post and the lineavire, so that the force of the current is correspondingly economized. The washers 1), of wood, india-rubber, or other suitable non-conducting material, are applied as shown, to secure proper insulation from the post. The device is grooved circumterentially, and a tiewire, 0, applied thereat to support the linewire D, around which its ends are coiled, as shown. Thus but one spike is required for each insulator, and that may be driven in the post before putting up the line. This latter operation requires a minimum degree of skill and training on the part of the workman, which, coupled with economy of material in both spike and insulator, and time in attaclr ing the insulator, results in an important difference in cost of erecting a telegraphic line as compared with the means and modes ordinarily employed; and, again, the form of the insulator and the mode of attaching the wire adapt the former to roll and the latter to slip more or less to accommodate inequalities of ground-surface, and neutralize the effect of swaying of the wire from high winds or other causes. Thus both the line and insulator will be less liable to break, either in the operation of putting up or tigl'ltening the wire, or in their usual static condition.

I claim that with my improved insulator a line can be put up quicker, better, and at less cost than with those 110w in use.

Nhat I claim is- A telegraph-insulator formed of a block of insulating material, and provided with an aperture for the spike, having concave ends to receive washers, and also provided with a circumferential groove at right angles to the spikeapertureto receive the tie-wire, as shown and described.

CHARLES L. LE BARON.

Witnesses FRANK MAURA, GEAs; LE BARON, Jr. 

